pertaining to light
21Corneal — Pertaining to the cornea, the clear front window of the eye. The cornea transmits and focuses light into the eye. The eye has a number of other components. These include the iris, pupil, lens, retina, macula, optic nerve and vitreous. The iris is …
22Outline of cell biology — Light micrograph of a moss s leaf cells at 400X magnification. The following outline is provided as an overview of and topical guide to cell biology: Cell biology (formerly cytology, from the Greek kytos, container ) – academic discipline that… …
23photopic — Pertaining to p. vision. * * * phot·opic fōt ō pik, äp ik adj relating to or being vision in bright light with light adapted eyes that is mediated by the cones of the retina * * * adj. relating to or describing conditions of bright illumination.… …
24lightweight — light•weight [[t]ˈlaɪtˌweɪt[/t]] adj. 1) light in weight: a lightweight topcoat[/ex] 2) without seriousness of purpose; trivial or trifling 3) of or pertaining to a lightweight: the new lightweight contender[/ex] 4) a person of less than average… …
25bathypelagic — pertaining to the mid waters below the level of light penetration between depths of 2000 and 4000 metres (or 900 3700m, 1000 6000 m, 1000 4000 m or 1000 2500 m, sources differ), e.g. Cyclothone microdon, Argyropelecus aculeatus and Gastrostomus… …
26mesopelagic — pertaining to the midwaters of the ocean between 200 and 1100 (or 100 1000m or 150 2000) metres (sources differ). Generally characterized by dim light and steep temperature gradients …
27photoautotrophic — Pertaining to a photoautotroph. * * * pho·to·au·to·tro·phic .ȯt ə trō fik adj autotrophic and utilizing energy from light <green plants are photoautotrophic> pho·to·au·to·tro·phi·cal·ly fi k(ə )lē adv * * * pho·to·au·to·tro·phic… …
28photoheterotrophic — Pertaining to a photoheterotroph. * * * pho·to·het·ero·tro·phic (fo″to het″ər o troґfik) [photo + hetero + trophic] deriving nourishment from organic compounds and energy from visible light …
29lighter-than-air — light′er than air′ adj. 1) aer. (of an aircraft) weighing less than the air it displaces, hence obtaining lift from aerostatic buoyancy 2) aer. of or pertaining to lighter than air craft • Etymology: 1900–05 …
30lightning — light•ning [[t]ˈlaɪt nɪŋ[/t]] n. v. ninged, ning, adj. 1) mer a brilliant electric spark discharge in the atmosphere, occurring within or between clouds, or between a cloud and the ground 2) mer to emit flashes of lightning (often used… …
